Urban ecological infrastructure is the ecological background of urban sustainable development and is the basic guarantee for the construction of ecological cities. According to the characteristics of the ecological infrastructure of coal-based cities, the ecological infrastructure is divided into two subsystems:natural infrastructure subsystem and artificial infrastructure subsystem. According to each subsystem and its main components(such as atmosphere, green space, hydrology, traffic and transportation), 36 indicators were selected to establish the evaluation system. In addition, the evaluation model was established by means of mean square deviation method and composite index method, and a dynamic analysis was carried out on the ecological infrastructure quality of Huainan City in 2006-2015. The results show that the composite index of ecological infrastructure in Huainan City in 2006-2015 remained at the medium level, and the natural infrastructure at the worse and poor levels, while the artificial infrastructure remained at the medium and excellent levels.
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